Electric fan



FIG. 1 is a front perspective view of an electric fan according to the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings represent portions of the electric fan that form no part of the claimed design. 

CLAIM We claim the ornamental design for an electric fan, as shown and described. 